2
# This script can be called in the following ways:
4
# After the package was installed:
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# <postinst> configure <old-version>
8
# If prerm fails during upgrade or fails on failed upgrade:
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# <old-postinst> abort-upgrade <new-version>
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# If prerm fails during deconfiguration of a package:
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# <postinst> abort-deconfigure in-favour <new-package> <version>
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# removing <old-package> <version>
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# If prerm fails during replacement due to conflict:
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# <postinst> abort-remove in-favour <new-package> <version>
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. /usr/share/debconf/confmodule
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# Update the initial RAM file system image
25
if command -v update-initramfs >/dev/null; then
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update-initramfs -k all -u
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elif command -v dracut >/dev/null; then
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dracut_version="`dpkg-query --showformat='${Version}' --show dracut`"
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if dpkg --compare-versions "$dracut_version" lt 043-1 \
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&& bash -c '. /etc/dracut.conf; . /etc/dracut.conf.d/*; [ "$hostonly" != yes ]'; then
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echo 'Dracut is not configured to use hostonly mode!' >&2
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# Logic taken from dracut.postinst
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for kernel in /boot/vmlinu[xz]-*; do
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kversion="${kernel#/boot/vmlinu[xz]-}"
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# Dracut preserves old permissions of initramfs image
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# files, so we adjust permissions before creating new
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# initramfs image containing secret keys.
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chmod go-r /boot/initrd.img-"$kversion"
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if [ "$kversion" != "*" ]; then
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/etc/kernel/postinst.d/dracut "$kversion"
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if dpkg --compare-versions "$2" lt-nl "1.0.10-1"; then
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# Make old initrd.img files unreadable too, in case they were
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# created with mandos-client 1.0.8 or older.
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find /boot -maxdepth 1 -type f -name "initrd.img-*.bak" \
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-print0 | xargs --null --no-run-if-empty chmod o-r
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# Rename old "mandos" user and group
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if dpkg --compare-versions "$2" lt "1.0.3-1"; then
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case "`getent passwd mandos`" in
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*:Mandos\ password\ system,,,:/nonexistent:/bin/false)
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usermod --login _mandos mandos
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groupmod --new-name _mandos mandos
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# Create new user and group
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if ! getent passwd _mandos >/dev/null; then
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adduser --system --force-badname --quiet --home /nonexistent \
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--no-create-home --group --disabled-password \
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--gecos "Mandos password system" _mandos
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# Create client key pairs
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# If the OpenPGP key files do not exist, generate all keys using
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if ! [ -r /etc/keys/mandos/pubkey.txt \
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-a -r /etc/keys/mandos/seckey.txt ]; then
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gpg-connect-agent KILLAGENT /bye || :
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# Remove any bad TLS keys by 1.8.0-1
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if dpkg --compare-versions "$2" eq "1.8.0-1" \
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|| dpkg --compare-versions "$2" eq "1.8.0-1~bpo9+1"; then
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if ! certtool --password='' \
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--load-privkey=/etc/keys/mandos/tls-privkey.pem \
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--outfile=/dev/null --pubkey-info --no-text \
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shred --remove -- /etc/keys/mandos/tls-privkey.pem \
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rm --force -- /etc/keys/mandos/tls-pubkey.pem
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# If the TLS keys already exists, do nothing
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if [ -r /etc/keys/mandos/tls-privkey.pem \
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-a -r /etc/keys/mandos/tls-pubkey.pem ]; then
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# Try to create the TLS keys
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TLS_PRIVKEYTMP="`mktemp -t mandos-client-privkey.XXXXXXXXXX`"
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if certtool --generate-privkey --password='' \
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--outfile "$TLS_PRIVKEYTMP" --sec-param ultra \
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--key-type=ed25519 --pkcs8 --no-text 2>/dev/null; then
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cp --archive "$TLS_PRIVKEYTMP" /etc/keys/mandos/tls-privkey.pem
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shred --remove -- "$TLS_PRIVKEYTMP" 2>/dev/null || :
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# First try certtool from GnuTLS
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if ! certtool --password='' \
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--load-privkey=/etc/keys/mandos/tls-privkey.pem \
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--outfile=/etc/keys/mandos/tls-pubkey.pem --pubkey-info \
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--no-text 2>/dev/null; then
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# Otherwise try OpenSSL
125
if ! openssl pkey -in /etc/keys/mandos/tls-privkey.pem \
126
-out /etc/keys/mandos/tls-pubkey.pem -pubout; then
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rm --force /etc/keys/mandos/tls-pubkey.pem
128
# None of the commands succeded; give up
135
key_id=$(mandos-keygen --passfile=/dev/null \
136
| grep --regexp="^key_id[ =]")
139
db_fset mandos-client/key_id seen false
140
db_reset mandos-client/key_id
141
db_subst mandos-client/key_id key_id $key_id
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db_input critical mandos-client/key_id || true
146
shred --remove -- "$TLS_PRIVKEYTMP" 2>/dev/null || :
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if [ -r /etc/keys/mandos/dhparams.pem ]; then
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# Create a Diffe-Hellman parameters file
155
DHFILE="`mktemp -t mandos-client-dh-parameters.XXXXXXXXXX.pem`"
156
# First try certtool from GnuTLS
157
if ! certtool --generate-dh-params --sec-param high \
158
--outfile "$DHFILE"; then
159
# Otherwise try OpenSSL
160
if ! openssl genpkey -genparam -algorithm DH -out "$DHFILE" \
161
-pkeyopt dh_paramgen_prime_len:3072; then
162
# None of the commands succeded; give up
167
sed --in-place --expression='0,/^-----BEGIN DH PARAMETERS-----$/d' \
169
sed --in-place --expression='1i-----BEGIN DH PARAMETERS-----' \
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cp --archive "$DHFILE" /etc/keys/mandos/dhparams.pem
179
create_dh_params "$@" || :
180
update_initramfs "$@"
181
if dpkg --compare-versions "$2" lt-nl "1.7.10-1"; then
182
PLUGINHELPERDIR=/usr/lib/$(dpkg-architecture -qDEB_HOST_MULTIARCH 2>/dev/null)/mandos/plugin-helpers
183
if ! dpkg-statoverride --list "$PLUGINHELPERDIR" \
184
>/dev/null 2>&1; then
185
chmod u=rwx,go= -- "$PLUGINHELPERDIR"
187
if ! dpkg-statoverride --list /etc/mandos/plugin-helpers \
188
>/dev/null 2>&1; then
189
chmod u=rwx,go= -- /etc/mandos/plugin-helpers
193
abort-upgrade|abort-deconfigure|abort-remove)
197
echo "$0 called with unknown argument '$1'" 1>&2
added
removed
debian/mandos-client.postinst
